Oxygen storage material and method for producing the same
a technology of oxygen storage material and oxygen atom, which is applied in the direction of physical/chemical process catalyst, separation process, and other chemical processes, can solve the problems of difficult solid-dissolving copper into a ceria-zirconia composite oxide, and achieve the effects of reducing the bonding strength of adjacent oxygen atoms, and reducing the difficulty of solid-dissolving copper
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example 1
[0068]The target composition was set to Ce0.5Zr0.45Cu0.05O1.95, and a ceria-zirconia-copper oxide composite oxide having the above-described composition was obtained through the solution combustion synthesis method as described below.
[0069]Specifically, cerium nitrate, zirconium nitrate, and copper nitrate in a stoichiometric ratio were dissolved in amounts of charge shown in Table 1 into the minimum amount of pure water shown in Table 1 at ordinary temperature so as to obtain the target composition. After it was confirmed that the solution became transparent, glycine in an amount corresponding to two equivalents with respect to the total amount of cations and shown in Table 1 was dissolved to obtain a mixed solution (solution). Next, the obtained mixed solution was put into an alumina crucible, followed by firing at 400° C. for 2 hours in the ambient atmosphere in a degreasing furnace to obtain a powder of a ceria-zirconia-copper oxide composite oxide having the above-described com...
example 2
[0070]The target composition was set to Ce0.5Zr0.4Cu0.1O1.9, and a powder of a ceria-zirconia-copper oxide composite oxide having the above-described composition was obtained in the same manner as in Example 1 except that the amount of each reagent was changed to an amount shown in Table 1.
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